It is fine and noble to say "we should look into what (beyond better, earlier detection and diagnoses) is causing all this autism!" and even "we should make sure we are testing these vaccines extensively!" but to just go around shouting, without evidence, and in spite of evidence to the contrary, "VACCINES CAUSE AUTISM" is 9/11 Truther hysterical idiocy at its dumbest.

But hey, all you non-doctors with absolutely no understanding of the scientific method or medical research can just go ahead and keep using your massive platforms to convince parents not to vaccinate their kids, because what is the worst that could happen?

Last week official figures showed that 1,348 confirmed cases of measles in England and Wales were reported last year, compared with 56 in 1998. Two children have died of the disease.

Good work, Arianna, letting this famous person promote his little pet cause on your website, thus is the vast potential of the citizen-driven new media landscape realized.